US9261216B2 - Exhaust system conduit with thermal/noise insulation - Google Patents
Exhaust system conduit with thermal/noise insulation Download PDFInfo
- Publication number
- US9261216B2 US9261216B2 US12/569,630 US56963009A US9261216B2 US 9261216 B2 US9261216 B2 US 9261216B2 US 56963009 A US56963009 A US 56963009A US 9261216 B2 US9261216 B2 US 9261216B2
- Authority
- US
- United States
- Prior art keywords
- conduit
- corrugation
- liner
- outer portion
- pipes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/026—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with interior reinforcement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
- F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
- F01N13/148—Multiple layers of insulating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/26—Hoses, i.e. flexible pipes made of sound-absorbing materials or with sound-absorbing structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0336—Noise absorbers by means of sound-absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/12—Tubes being corrugated
Definitions
- This invention relates generally to the field of pipe systems and more particularly to a flexible pipe system such as the type commonly used in vehicular exhaust systems or farm equipment, construction equipment, or other equipment.
- Flexible pipe and conduit structures are used in a variety of applications.
- vehicular exhaust systems make use of flexible conduits in order to accommodate the jarring, vibration and thermal stresses to which the exhaust system is subjected when the vehicle is in use.
- spiral wound flexible pipes suitable for use in vehicular exhaust systems are disclosed in U.S. Pat. No. 6,497,254 to Thomas et al.
- Bellows type systems which provide flexibility by using corrugated conduits are exemplified by U.S. Pat. No. 7,066,495 to Thomas et al.
- the latter patent also discloses an arrangement for interfitting the corrugations on the pipes in a manner to allow relative rotation at the pipe joints.
- the present invention is directed to a flexible conduit system which may be used in a variety of applications, including in an exhaust system for an engine used on vehicles, farm equipment, construction equipment or other equipment.
- a conduit which is used to couple together a pair of pipes is constructed with a corrugated outer portion, an inside portion which may be a spirally wound strip with interlocked edges, and a layer of insulation sandwiched between the inside and outside portions.
- the insulation layer may be constructed of any suitable material that is effective to suppress noise transmission within the conduit and to resist heat transmission. Additionally, the insulation provides a barrier that dampens vibration and prevents the inside and outside layers of the pipe from physically contacting each other. As a consequence, the conduit and the joints it makes with other pipe exhibit improved noise control, reduced heat transmission, diminished vibration, and enhanced structural capabilities.
- the conduit provides particular utility as a joint between two other pipes, and the joint may be constructed as either a torsional joint or a non-torsional joint depending upon the application.
- FIG. 1 is a sectional view showing a conduit constructed according to one preferred embodiment of the present invention, with the conduit having a configuration to provide a torsional joint between a pair of pipes;
- FIG. 2 is a fragmentary sectional view on an enlarged scale of the detail identified at 2 in FIG. 1 ;
- FIG. 3 is a sectional view of a conduit constructed according to another embodiment of The present invention, with the conduit arranged to provide a non-torsional joint;
- FIG. 4 is a fragmentary sectional view on an enlarged scale of the detail identified at 4 in FIG. 3 .
- conduit 10 generally designates a conduit which is constructed according to one embodiment of the present invention.
- the conduit 10 may couple together a pair of pipes 12 and 14 .
- the conduit 10 and the pipes 12 and 14 may be parts of a vehicular exhaust system through which exhaust gases flow.
- the conduit 10 has an inner cylindrical liner portion 16 which may be constructed as a flexible conduit formed by a spirally wound strip 18 having edges of adjacent windings interlocked in the manner described in U.S. Pat. No. 6,427,727 to Thomas which is incorporated by reference.
- the liner portion 16 has a flexible construction which allows it to flex in a manner to withstand the forces that are applied to it in service.
- the liner portion 16 provides a cylindrical bore 20 through which the hot vehicular exhaust gases pass from pipe 12 to pipe 14 , as shown by the directional arrow 22 in FIG. 1 .
- An outer portion of the conduit 10 is formed by a bellows 24 which extends around the liner 16 and has a plurality of corrugations 26 on its outer surface.
- the bellows 24 may be constructed in the manner disclosed in U.S. Pat. No. 7,066,495 to Thomas et al. which is incorporated by reference.
- the outer portion of conduit 10 may be constructed as a braided structure, an interlock flexible hose or in another manner providing flexibility to the conduit (not shown).
- a cylindrical insulation blanket 28 is sandwiched between the inside liner 16 and the bellows 24 .
- the layer or blanket 28 may be constructed of any material that is effective to attenuate noise, resist heat transmission, and/or dampen vibration.
- One material that is satisfactory for the blanket 28 is commercially available silica fiber insulation. However, additional materials having the necessary characteristics can also be used.
- the blanket 28 is enclosed within the conduit structure provided by the bellows 24 on the outside and the inside liner 16 on the inside.
- the conduit 10 may be equipped with a pair of end fittings 30 and 32 which are located on opposite ends of the conduit 10 .
- Fitting 30 has at least one exterior corrugation 34 that interfits with a mating corrugation 26 on or near the end of the bellows 24 .
- the fit between these corrugations allow the fitting 30 to rotate relative to the bellows 24 with the corrugations continuing to mate during such rotation in order to maintain the integrity of the rotary or torsional joint.
- fitting 32 has at least one corrugation 36 that interfits with a mating corrugation 26 on or near the opposite end of the bellows 24 . This allows fitting 32 to rotate relative to bellows 24 similarly to fitting 30 .
- Pipes 12 and 14 may be connected to the respective fittings 30 and 32 by welding or in any other suitable matter. In this way, the pipes 12 and 14 are allowed to rotate relative to the conduit 10 to relieve torsional stresses that may be applied to the pipe structure during use.
- the flexibility provided by the strip wound inside liner portion 16 and the outer bellows 24 accommodates jolting, vibration and thermal stresses to which the exhaust system is subjected.
- the torsional joint provided by the rotary connections of the fittings 30 and 32 enables the pipe system to withstand rotary or torsional loads without undue stress.
- the insulation blanket 28 is of particular importance because it reduces the noise that is generated within the piping system as the vehicle operates and hot exhaust gases flow through the pipes 12 and 14 and the conduit 10 .
- the thermal insulation provided by the blanket 28 reduces the heat transmission from the inside to the outside of the conduit 10 , and the corrugations 26 act as cooling fins to dissipate the heat from the bellows 24 .
- the insulation 28 also serves to dampen vibration of the pipe system and thus reduces the fatigue forces that can weaken pipe systems of this type over prolonged periods of operation.
- conduit 110 generally identifies a conduit constructed according to a second embodiment of the invention.
- the conduit 110 is used to connect a pair of pipes 112 and 114 which may be part of a vehicular exhaust system or another type of pipe system.
- the conduit 110 has an inside liner 116 which may be a spirally wound strip 118 interconnected at its edges in the manner described previously for conduit 16 .
- the liner 116 provides a cylindrical bore 120 aligned with the bores of pipes 112 and 114 to accommodate the flow of materials such as hot exhaust gases from pipe 112 to pipe 114 .
- An outer portion of the conduit 110 is provided by a bellows 124 having a plurality of corrugations 126 on its outside surface.
- the bellows 124 may be constructed generally in the same manner as bellows 24 .
- An insulation blanket 128 is enclosed within conduit 110 between the inside liner 116 and bellows 124 .
- the blanket 128 serves the same function as blanket 28 and may be constructed of the same materials and in a similar cylindrical configuration.
- a flexible cover 129 may be used to closely cover the entirety of the conduit 110 .
- the cover 129 may be secured in place by any suitable means and may be constructed of any suitable material, preferably wire braid.
- the conduit 110 is provided with end flanges 130 and 132 which may be integral with the inside tube 116 and/or the bellows 124 .
- the end fittings 130 and 132 are cylindrical and provide a convenient means for attaching conduit 110 to the pipes 112 and 114 , as by welding the pipes to the end fittings.
- the conduit 110 provides a non-torsional joint between the pipes 112 and 114 .
- the insulation blanket 128 provides the same noise attenuation, heat resistance and vibration dampening as blanket 28 when the pipe system is in service as a vehicular exhaust system or otherwise.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Silencers (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
Claims (6)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/569,630 US9261216B2 (en) | 2009-09-29 | 2009-09-29 | Exhaust system conduit with thermal/noise insulation |
CA2986714A CA2986714A1 (en) | 2009-09-29 | 2010-09-15 | Exhaust system conduit with thermal/noise insulation |
CA2714750A CA2714750C (en) | 2009-09-29 | 2010-09-15 | Exhaust system conduit with thermal/noise insulation |
EP10179025A EP2302275A1 (en) | 2009-09-29 | 2010-09-23 | Exhaust system conduit with thermal/noise insulation |
US13/297,680 US20120056414A1 (en) | 2009-09-29 | 2011-11-16 | Exhaust system conduit with thermal/noise insulation |
US15/043,783 US20160186897A1 (en) | 2009-09-29 | 2016-02-15 | Exhaust system conduit with thermal/noise insulation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/569,630 US9261216B2 (en) | 2009-09-29 | 2009-09-29 | Exhaust system conduit with thermal/noise insulation |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/297,680 Continuation-In-Part US20120056414A1 (en) | 2009-09-29 | 2011-11-16 | Exhaust system conduit with thermal/noise insulation |
US15/043,783 Division US20160186897A1 (en) | 2009-09-29 | 2016-02-15 | Exhaust system conduit with thermal/noise insulation |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110074147A1 US20110074147A1 (en) | 2011-03-31 |
US9261216B2 true US9261216B2 (en) | 2016-02-16 |
Family
ID=43297084
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/569,630 Active 2032-03-12 US9261216B2 (en) | 2009-09-29 | 2009-09-29 | Exhaust system conduit with thermal/noise insulation |
US15/043,783 Abandoned US20160186897A1 (en) | 2009-09-29 | 2016-02-15 | Exhaust system conduit with thermal/noise insulation |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/043,783 Abandoned US20160186897A1 (en) | 2009-09-29 | 2016-02-15 | Exhaust system conduit with thermal/noise insulation |
Country Status (3)
Country | Link |
---|---|
US (2) | US9261216B2 (en) |
EP (1) | EP2302275A1 (en) |
CA (2) | CA2714750C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10704728B2 (en) | 2018-03-20 | 2020-07-07 | Ina Acquisition Corp. | Pipe liner and method of making same |
US10995650B2 (en) | 2017-03-03 | 2021-05-04 | Cummins Inc. | Heat shield for bellows |
US11173634B2 (en) | 2018-02-01 | 2021-11-16 | Ina Acquisition Corp | Electromagnetic radiation curable pipe liner and method of making and installing the same |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010037162B4 (en) * | 2009-08-31 | 2018-05-03 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Damping element for decoupling elements, in particular for diaphragm bellows |
US20120112452A1 (en) * | 2010-11-09 | 2012-05-10 | Stalcup Ii Robert Franklin | Compressible exhaust connection member |
US8100315B1 (en) * | 2011-07-11 | 2012-01-24 | Tennco Automotive Operating Company Inc. | Method of insulating an exhaust device |
CN103133812A (en) * | 2013-03-26 | 2013-06-05 | 江苏亚星波纹管有限公司 | Novel pipeline compensator |
US9970578B2 (en) | 2014-07-02 | 2018-05-15 | American Boa, Inc. | Dynamic liner sleeve for flexible coupling |
EP3091267B1 (en) | 2015-05-04 | 2020-05-27 | Sjm Co., Ltd. | Flexible conduit element |
LU92766B1 (en) | 2015-07-09 | 2017-01-30 | Wurth Paul Sa | Bellow compensator |
WO2017011480A1 (en) * | 2015-07-13 | 2017-01-19 | Exotic Metals Forming Company LLC | Flexible joint assembly for high or low temperature fluid systems |
CN106014582B (en) * | 2016-06-15 | 2019-01-15 | 宁波菲力克汽配有限公司 | A kind of damping flexible pipe |
CN110118498A (en) * | 2019-05-23 | 2019-08-13 | 中国科学院理化技术研究所 | A kind of cryogenic heat transfer device and cryogenic heat transfer system |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4047740A (en) | 1976-06-01 | 1977-09-13 | Caterpillar Tractor Co. | Internally insulated bellows assembly |
US4278277A (en) * | 1979-07-26 | 1981-07-14 | Pieter Krijgsman | Structure for compensating for different thermal expansions of inner and outer concentrically mounted pipes |
FR2568309A1 (en) | 1984-07-25 | 1986-01-31 | Witzenmann Metallschlauchfab | Transverse engined motor vehicle |
DE3708415A1 (en) | 1987-03-14 | 1988-09-22 | Witzenmann Metallschlauchfab | FLEXIBLE PIPE ELEMENT FOR EXHAUST PIPES FROM COMBUSTION ENGINES |
DE4042291A1 (en) | 1990-12-31 | 1992-07-02 | Witzenmann Metallschlauchfab | FLEXIBLE PIPE ELEMENT FOR EXHAUST PIPES FROM COMBUSTION ENGINES IN MOTOR VEHICLES |
US5222288A (en) | 1991-06-17 | 1993-06-29 | Tru-Flex Metal Hose Corporation | Method for forming a spiral-wound flexible piping |
US5346263A (en) | 1990-03-09 | 1994-09-13 | Iwk Regler Und Kompensatoren Gmbh | Flexible line element with thermal insulation |
US5957504A (en) * | 1997-04-10 | 1999-09-28 | Senior Engineering Investments Ag | Exhaust manifold attachment apparatus |
EP0974741A1 (en) | 1998-07-20 | 2000-01-26 | SJM Company Limited | Flexible tube of an exhaust pipe for motor vehicles |
US6427727B1 (en) * | 1998-08-21 | 2002-08-06 | Tru-Flex Metal Hose Corporation | Flexible hose length control system, exhaust system application, and manufacturing method |
US6497254B2 (en) | 2001-02-24 | 2002-12-24 | Tru-Flex Metal Hose Corporation | Self-sealing flexible metal hose |
US20030047941A1 (en) * | 2001-09-10 | 2003-03-13 | Tru-Flex Metal Hose Corp. | Exhaust bellows for dynamic torsion control in an exhaust system |
EP1467072A1 (en) | 2003-04-07 | 2004-10-13 | IWKA Balg- und Kompensatoren Technologie GmbH | Flexible pipe element |
DE202006011404U1 (en) | 2006-07-25 | 2006-09-28 | Witzenmann Gmbh | Flexible control unit for motor vehicle`s exhaust gas system, has metal tube having different standard axial loss factors of specific values, after operation of vehicle and during installation condition, respectively |
DE102005052204A1 (en) | 2005-11-02 | 2007-06-06 | Witzenmann Gmbh | Flexible conduit element |
EP1908936A1 (en) | 2006-10-02 | 2008-04-09 | Sjm Co., Ltd. | Flexible conduit element |
DE102007043944A1 (en) | 2007-09-14 | 2009-03-19 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Flexible pipe element for exhaust gas system of passenger car, has film made of three layers and formed as hollow cylinder between flexible inner tube and flexible, gas-tight cladding part, where exhaust gas flows via inner tube |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3420553A (en) * | 1966-02-09 | 1969-01-07 | Calumet & Hecla | Apparatus for absorbing sound and vibration in a piping system |
US4835972A (en) * | 1986-03-13 | 1989-06-06 | Helix Technology Corporation | Flex-line vibration isolator and cryopump with vibration isolation |
-
2009
- 2009-09-29 US US12/569,630 patent/US9261216B2/en active Active
-
2010
- 2010-09-15 CA CA2714750A patent/CA2714750C/en active Active
- 2010-09-15 CA CA2986714A patent/CA2986714A1/en not_active Abandoned
- 2010-09-23 EP EP10179025A patent/EP2302275A1/en not_active Withdrawn
-
2016
- 2016-02-15 US US15/043,783 patent/US20160186897A1/en not_active Abandoned
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4047740A (en) | 1976-06-01 | 1977-09-13 | Caterpillar Tractor Co. | Internally insulated bellows assembly |
US4278277A (en) * | 1979-07-26 | 1981-07-14 | Pieter Krijgsman | Structure for compensating for different thermal expansions of inner and outer concentrically mounted pipes |
FR2568309A1 (en) | 1984-07-25 | 1986-01-31 | Witzenmann Metallschlauchfab | Transverse engined motor vehicle |
DE3708415A1 (en) | 1987-03-14 | 1988-09-22 | Witzenmann Metallschlauchfab | FLEXIBLE PIPE ELEMENT FOR EXHAUST PIPES FROM COMBUSTION ENGINES |
US5346263A (en) | 1990-03-09 | 1994-09-13 | Iwk Regler Und Kompensatoren Gmbh | Flexible line element with thermal insulation |
DE4042291A1 (en) | 1990-12-31 | 1992-07-02 | Witzenmann Metallschlauchfab | FLEXIBLE PIPE ELEMENT FOR EXHAUST PIPES FROM COMBUSTION ENGINES IN MOTOR VEHICLES |
US5222288A (en) | 1991-06-17 | 1993-06-29 | Tru-Flex Metal Hose Corporation | Method for forming a spiral-wound flexible piping |
US5957504A (en) * | 1997-04-10 | 1999-09-28 | Senior Engineering Investments Ag | Exhaust manifold attachment apparatus |
EP0974741A1 (en) | 1998-07-20 | 2000-01-26 | SJM Company Limited | Flexible tube of an exhaust pipe for motor vehicles |
US6427727B1 (en) * | 1998-08-21 | 2002-08-06 | Tru-Flex Metal Hose Corporation | Flexible hose length control system, exhaust system application, and manufacturing method |
US6497254B2 (en) | 2001-02-24 | 2002-12-24 | Tru-Flex Metal Hose Corporation | Self-sealing flexible metal hose |
US20030047941A1 (en) * | 2001-09-10 | 2003-03-13 | Tru-Flex Metal Hose Corp. | Exhaust bellows for dynamic torsion control in an exhaust system |
US20040100094A1 (en) * | 2001-09-10 | 2004-05-27 | Tru-Flex Metal Hose Corp. | Exhaust bellows for dynamic torsion control in an exhaust system |
US6893053B2 (en) * | 2001-09-10 | 2005-05-17 | Tru-Flex Metal Hose Corp. | Exhaust bellows for dynamic torsion control in an exhaust system |
US7066495B2 (en) | 2001-09-10 | 2006-06-27 | Tru-Flex Metal Hose Corp. | Exhaust bellows for dynamic torsion control in an exhaust system |
EP1467072A1 (en) | 2003-04-07 | 2004-10-13 | IWKA Balg- und Kompensatoren Technologie GmbH | Flexible pipe element |
DE102005052204A1 (en) | 2005-11-02 | 2007-06-06 | Witzenmann Gmbh | Flexible conduit element |
DE202006011404U1 (en) | 2006-07-25 | 2006-09-28 | Witzenmann Gmbh | Flexible control unit for motor vehicle`s exhaust gas system, has metal tube having different standard axial loss factors of specific values, after operation of vehicle and during installation condition, respectively |
EP1908936A1 (en) | 2006-10-02 | 2008-04-09 | Sjm Co., Ltd. | Flexible conduit element |
DE102007043944A1 (en) | 2007-09-14 | 2009-03-19 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Flexible pipe element for exhaust gas system of passenger car, has film made of three layers and formed as hollow cylinder between flexible inner tube and flexible, gas-tight cladding part, where exhaust gas flows via inner tube |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10995650B2 (en) | 2017-03-03 | 2021-05-04 | Cummins Inc. | Heat shield for bellows |
US11173634B2 (en) | 2018-02-01 | 2021-11-16 | Ina Acquisition Corp | Electromagnetic radiation curable pipe liner and method of making and installing the same |
US10704728B2 (en) | 2018-03-20 | 2020-07-07 | Ina Acquisition Corp. | Pipe liner and method of making same |
US11384889B2 (en) | 2018-03-20 | 2022-07-12 | Ina Acquisition Corp. | Pipe liner and method of making and installing the same |
Also Published As
Publication number | Publication date |
---|---|
CA2714750C (en) | 2018-01-09 |
US20160186897A1 (en) | 2016-06-30 |
EP2302275A1 (en) | 2011-03-30 |
US20110074147A1 (en) | 2011-03-31 |
CA2986714A1 (en) | 2011-03-29 |
CA2714750A1 (en) | 2011-03-29 |
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